August 21, 2014 6:12 PM EDT

Despite their yellow skin, overbites, and the fact that they only have four fingers, quite a few residents of the Simpson’s hometown of Springfield are based on real people.

Homer, Marge, Maggie, and Lisa are named after Matt Groening’s family, but other characters are a little more obvious. Rainier Wolfcastle, for example, is an Austrian-born bodybuilder-turned-actor-turned-politician. Who do we know that sounds like that?

From A-list celebrities, to little known comedians and golden age stars, the Simpson’s universe is populated by some very real-life characters.

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